Hierarchical Structure in Nanotransport
Abstract not provided.
Publications
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Jump to search filtersActive Aerodynamic Blade Control Design for Load Reduction on Large Wind Turbines to Increase Energy Capture
Abstract not provided.
Human Factors Literature Review
Abstract not provided.
Networks Grand Challenge LDRD External Advisory Board Meeting
Abstract not provided.
Wind and Transmission: Challenges and Opportunities
Abstract not provided.
Interconnection and Transmission Service
Abstract not provided.
Interconnection of Wind Power plants
Abstract not provided.
The Role of Technology in the Future of Wind Energy
Abstract not provided.
Assessing the Dynamics of Climate and Conflict
Abstract not provided.
Magnetic-pulse-driven Rayleigh-Taylor instability in plastically deforming metals
Abstract not provided.
Waste forms integrated performance & safety code suite : overview of technical needs
Abstract not provided.
Multilevel Project
Abstract not provided.
Large-Scale Social Simulation for Engineering Strategic Communications
A New Parallel Strategy for Transistor-Level Circuit Simulation
Abstract not provided.
Understanding dynamic material properties through pulsed power experiments
Abstract not provided.
Benchmark critical experiments containing rhodium
Abstract not provided.
Slanted-wall beam propagation : erratum
Proposed for publication in the Journal of Lightwave Technology.
Recently, a new algorithm for wide-angle beam propagation was reported that allowed grid points to move in an arbitrary fashion between propagation planes and was thus capable of modeling waveguides whose widths or centerlines varied with propagation distance. That algorithm was accurate and stable for TE polarization but unstable for wide-angle TM propagation. This deficiency has been found to result from an omission in one of the wide-angle terms in the derivation of the finite-difference equation and is remedied here, resulting in a complete algorithm accurate for both polarizations.
Climate Changes in the Arctic and The Challenge to USCG Operations
Abstract not provided.
Green chemical management
Abstract not provided.
Performance of an MPI-only semiconductor device simulator on a quad socket/quad core InfiniBand platform
This preliminary study considers the scaling and performance of a finite element (FE) semiconductor device simulator on a capacity cluster with 272 compute nodes based on a homogeneous multicore node architecture utilizing 16 cores. The inter-node communication backbone for this Tri-Lab Linux Capacity Cluster (TLCC) machine is comprised of an InfiniBand interconnect. The nonuniform memory access (NUMA) nodes consist of 2.2 GHz quad socket/quad core AMD Opteron processors. The performance results for this study are obtained with a FE semiconductor device simulation code (Charon) that is based on a fully-coupled Newton-Krylov solver with domain decomposition and multilevel preconditioners. Scaling and multicore performance results are presented for large-scale problems of 100+ million unknowns on up to 4096 cores. A parallel scaling comparison is also presented with the Cray XT3/4 Red Storm capability platform. The results indicate that an MPI-only programming model for utilizing the multicore nodes is reasonably efficient on all 16 cores per compute node. However, the results also indicated that the multilevel preconditioner, which is critical for large-scale capability type simulations, scales better on the Red Storm machine than the TLCC machine.
Technical Advisory Team (TAT) report on the rocket sled test accident of October 9, 2008
This report summarizes probable causes and contributing factors that led to a rocket motor initiating prematurely while employees were preparing instrumentation for an AIII rocket sled test at SNL/NM, resulting in a Type-B Accident. Originally prepared by the Technical Advisory Team that provided technical assistance to the NNSA's Accident Investigation Board, the report includes analyses of several proposed causes and concludes that the most probable source of power for premature initiation of the rocket motor was the independent battery contained in the HiCap recorder package. The report includes data, evidence, and proposed scenarios to substantiate the analyses.
Process Innovation for Very Small Projects and Teams
Abstract not provided.
Integration of radiation protection and emergency management program assets at Sandia National Laboratories
Abstract not provided.
276_course materials_1-9-08
Abstract not provided.
Investigation of multi-layer thin films for energy storage
We investigate here the feasibility of increasing the energy density of thin-film capacitors by construction of a multi-layer capacitor device through ablation and redeposition of the capacitor materials using a high-power pulsed ion beam. The deposition experiments were conducted on the RHEPP-1 facility at Sandia National Laboratories. The dielectric capacitor filler material was a composition of Lead-Lanthanum-Zirconium-Titanium oxide (PLZT). The energy storage can be increased by using material of intrinsically high dielectric constant, and constructing many thin layers of this material. For successful device construction, there are a number of challenging requirements including correct stoichiometric and crystallographic composition of the deposited PLZT. This report details some success in satisfying these requirements, even though the attempt at device manufacture was unsuccessful. The conclusion that 900 C temperatures are necessary to reconstitute the deposited PLZT has implications for future manufacturing capability.
Results 76026–76050 of 99,299